Grapevine Viruses

About International Year of Plant Health:
http://www.fao.org/plant-health-2020/...

Follow us on our other platforms for the latest Agriculture and Agri-Food Canada updates!

-Website: http://www.agr.gc.ca/eng/home/?id=139...
-Facebook: @CanadianAgriculture
  / canadianagriculture  
-Twitter: @AAFC_Canada
https://twitter.com/AAFC_Canada?ref_s...

------------------------------------



Full Video Transcript:

[Upbeat modern music fades in.]
[There are bunches of ripe grapes on vines. Text appears.]
Text on screen: Grapevine Viruses
José Torres: Grapevines host many different pathogens.
[Cut to José Torres standing by a row of grapevines. Text appears.]
Text on screen: Dr. José Ramon Urbez Torres, Research Scientist, Agriculture and Agri-Food Canada
Among all these different pathogens, viruses are some of the most important…
[Cut to bottles on a conveyer belt. Then two people drinking glasses of wine.]
…because they cause significant economic impact to the industry.
[Cut back to José Torres.]
We are focusing our research on two main viruses.
[Cut to a close-up of José Torres’ hand gesturing to a grape vine with red, infected leaves. Text appears.]
Text on screen: Grapevine leaf roll virus
Grapevine leafroll virus…
[Cut to an image of a grapevine leaf with red splotches. Text appears.]
Text on screen: Grapevine red blotch virus
…and grapevine red blotch virus.
[Cut to Hans Buchler standing by a row of grapevines. Text appears.]
Text on screen: Hans Buchler, Chair, Canadian Grapevine Certification Network
Hans Buchler: Much of the research that is being done that has actually improved the situation for us is the ability to very quickly diagnose viruses.
[Cut to Sudarsana Poojari smiling in a lab.]
Sudarsana Poojari: Our lab is capable of detecting more than twenty-four different virus species.
[Cut to Sudarsana Poojari speaking to the camera. Text appears.]
Text on screen: Dr. Sudarsana Poojari, Research Scientist, Agriculture and Agri-Food Canada
We can analyse as many as 96 samples in a matter of 20 minutes.
[Cut to Tom Lowery in a lab. Text appears.]
Text on screen: Dr. Tom Lowery, Research Scientist, Agriculture and Agri-Food Canada
Tom Lowery: In order to properly manage these viruses, we first of all have to understand how the virus spreads into and within the vineyards.
[Cut to scientists breaking leaves off of grapevine plants. Then to a man driving a knife into a grapevine stem.]
It’s often introduced in the nursery material.
[Cut back to Tom Lowery.]
Often another route is through vectors. The vectors can carry virus into those plantings.
[Cut to a grapevine stem with a white scale infection.]
The vectors we have for Leafroll Virus are the Cottony Maple Scale…
[Cut to a close-up of Tom Lowery’s hands peeling open a stem.]
…and the European Fruit Lecanium Scale…
[Cut to an image of the European Fruit Lecanium Scale on tree bark.]
…or grape mealybug.
[Cut to an image of grape mealybugs on a green stem. Cut back to Tom Lowery.]
Tom Lowery: Ultimately, we want to manage the vectors.
[Cut to Carl Bogdanoff walking down a row of grapevines.]
Carl Bogdanoff: One of the reasons why a virus is so bad is it can’t be cured, and year after year, the symptoms get worse and worse and worse.
[Cut to Carl Bogdanoff speaking to the camera. Text appears.]
Text on screen: Carl Bogdanoff, Biologist, Agriculture and Agri-Food Canada
So, a healthy, normal vine, a vineyard would last maybe 40 years or so…
[Cut to a shot walking past the grapevines.]
…whereas a vineyard that has Leafroll will probably last half as long…
[Cut back to Carl Bogdanoff.]
…and in those last 5-10 years of its lifespan would yield a lot less, and the quality of that wine gets less and less.
[Cut to an image of two bunches of grapes side by side. On the left is a bunch of big, round grapes with the label “Healthy”. On the right is a sparse bunch of small, darkened grapes labelled “Unhealthy”.]
[Cut to José Torres.]
José Torres: We are working together with many different growers who actually give us access to their vineyards and allow us to conduct our research in their vineyard blocks.
[Cut to José Torres showing a group of researchers infected grapevine leaves. Then to a close-up of hands cutting a bushel of grapes from the vine.]
[Cut back to José Torres.]
We are trying to transfer to the industry the importance that these viruses have on their vineyards.
[Cut to a row of grapevines.]
Hans Buchler: The collaboration we’ve had with Agricultre and Agri-Food Canada has been fantastic, obviously. It makes a huge impact on where the industry is going.
[Fade to the animated Canada wordmark.]
Text on screen: (c) Her Majesty the Queen in Right of Canada, represented by the Minister of Agriculture and Agri-Food (2019)
[The upbeat modern music fades out.]
[Fade to black.]